Shoe for third-rail electric cars.



- L.A. MQGOUBRIE & G. F. RAYDURE.

SHOE FOR THIRD RAIL ELECTRIC CARS.

APPLICATION FILED OCT. 22, 1910.

9,767o Patented Nov. 28, 1911 E E E\\\\\\\\\\ 7&1, 444: gm;

WITNESSES BY h! Maflw nvvzurons, I

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LOUDEN A. MGCOUIBRIE AND CHARLES F. RAYDURE, 0F PHILADELPHIA,PENNSYLVANIA.

SHOE FOR THIRD-EAIL ELEGTRIG CARS.

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Original application filed April 24:, 1909, Serial No. 492,017.

Specification of Letters Patent.

1910. Serial No. 588,450.

To all whom it may concern:

Be it known that we, LoUDnN A. Mo- Couenns and Cultures F. RAYDURE, bothcitizens of the United States, residing at the city of Philadelphia, inthe county of Philadelphia and State of Pennsylvania, have jointlyinvented certain new and useful Tmprovements in Shoes for Third-RailElectric Cars, of which the following is a specification.

@ur present invention has relation to a shoe with a removablecontact-piece for third-rail electric railway cars embodyingimprovements over Letters Patent No. 985,430, dated February 28th, 1911,granted to us and of which this application is a division of theapplication filed April 24th, 1909, for the said patent; the presentapplication having reference to constructive details in the arrangementof such a shoe, for the above defined purpose.

Our invention will be more fully understood from the followingdescription taken in connection with the accompanying drawings formingpart hereof, in which" Figure l, is a top or plan view of a thirdrailshoe with a removable upper rail con tact; the said view embracing mainfeatures of our present invention. Fig. 2 is a front elevational view ofthe same. Fig. 3, is a vertical central sectional view on the line 00,as, of Fig. 2, with the electrical connections omitted; and Fig. l, isan end elevational View of the shoe-member showing in detail theremovable upper rail contact-piece.

In the drawings a, is a shoe or contactmember and a a supporting-memberto which the shoe or contact-member is pivotally attached. These membersare arranged so as to be adjustably secured to a plate a forming part ofa car-truck frame, not shown.

The shoe-member a, has a central perforated tubular part arranged toprovide a bearing to fit between two end perforated tubular parts ofsaid supporting member (4 Formed with the central portion of theshoemember a is a tapering projection a as clearly illustrated in Figs.3 and t, to be presently described. Through the perforated tubular partsof both members a and 0: is inserted a pin o to form a pivotalconnection for the same, as clearly shown in Figs. 1 and 3. Therespective ends of the pivot-pin 0?, have openings to receivecotter-pins a and a so that when the cotterpins are removed thepivot-pin a may be readily withdrawn and the shoe-member a, releasedfrom the supporting member al The member a is preferably arranged withan upper rear ratcheted surface Fig. 3, to register with a ratchetedplate a intended to be secured to the car-truck frame.

The ratcheted surface of the member a by registering with the ratchetedplate a insures the two to be adjustably secured in required operativeposition and so held then by tightening bolts (21. and a as clearlyshown in Fig. 2, whereby when required the shoe-member a may be quicklyand securely brought into proper operative relation with an electrifiedrail of a road-bed, not shown. The shoe-member a, is recessed in thefront portion to receive the rail shoe or contactpiece a held by meansof removable bolts. As shown the shoe or contact-piece a is beveled offadjacent to the respective edges, as clearly shown in Fig. 1.

The supporting member a is provided with a blocklike casting Z), havinga vertical opening and a chamber 5 provided therein. 6 is a headed boltpartially threaded and vertically extending through the opening 6 andthrough an opening in the shoe-member a, as shown in Fig. On thethreaded portion Z7 of the bolt is applied a nut o to permit in a handymanner the compressing of a coiled spring which encicles the bolt 6 andengages a seatingcap Z), to be presently more fully explained. In caseof wear of the contact a the nut b and bolt b provide by manual turningsof the nut on the said bolt through the compressing of the coiled spring6 to take up such wear. The bolt 6 carrying at the upper end theseating-cap b, and against which at one end engages the helical spring 6and at the other end the spring has a bearing in a recess 5 of themember a to maintain normally the shoe-member a, under required springtension with the supporting member (4 to establish and maintain reliablesurface contact of the shoemember a, with an electrified rail. Thetapering projection a, of the member a or;- tends upward into thechamber 6 of the member a and this chamber is of greater width than theprojection. The bottom surface of the supporting member a, is shaped soas to contact with the outer surface of the tubular part on both sidesof the chamber Z2 as clearly shown in Fig. 8. By this arrangement wearof the bottom surface of the supporting member a against the tubularpart of the member a and pivot-pin (4 in the tubular parts of bothmembers will be equalized so that both members have two real points ofbearing contact to insure greater uniformity of action of the shoememberin contact with a live rail and also far more reliable practical resultsare obtained during such contact. When the contact piece a has becomeworn by turning the nut 6 on the threaded portion of the bolt 6 withincertain limits this is provided for, that is, to the extent of normalmovement of the projection a", of the contact-member a, within thechamber 5 of the supporting member a without having to disarrange otherparts of either member to accomplish such result.

6 and e are insulated electric wire connections of the shoe-member a.These wires are detachably connected with binding posts 65 and (Z and eand 6 of a plate 6, suitably bolted to the upper portion of thesupporting member a, as illustrated in Figs. 1, 2 and 4.

Having thus described the nature and object of our invention, what weclaim as new and desire to secure by Letters Patent A shoe forelectric-railway cars comprising a horizontal shoe-member provided witha contact piece and a tubulanpart having a vertical tapering projection,a vertical supporting member provided with a chamber into which extendssaid projection and the chamber of said supporting member of greaterwidth than said projection and the bottom surface of saidsupporting-member shaped to contact with the outer surface of saidtubular part on both sides of said chamher, a pivot extending throughsaid tubularpart and connecting said shoe-member with saidsupporting-member, means arranged in front of said pivotal connect-ionfor maintaining under working tension said members andelectrical-connections for the contactpiece of said shoe-member.

In witness whereof we have hereunto set our signatures in the presenceof two subscribing witnesses.

LOUDEN A. MOCOUBRIE. CHARLES F. RAYDURE.

'Witnesses THOMAS M. SMITH, ELISABETH A. SHELDRAKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

